Amit you did a very common mistake for beginners
You use the ( ' ) key instead of the correct (`) key!
Try the following command and everything is ok.
<< Statistics`NormalDistribution`
That is the two singles quotes used here are "back quotes"
usually found on the same key with ~.
They are NOT the single quotes found on the double-quote key.
Note that the back-quote character is used to separate the package
from the directory name, and at the end in place of .m.
See the following link for more information.
http://documents.wolfram.com/mathematica/book/section-2.7.9
Following also one of the invaluable suggestions of David Park
I recomend you to use the following command in order to load the
package.
Needs["Statistics'NormalDistribution`"]
In this way you avoid conflicts of possible reloading of the package.
Regards
Dimitris
amitsoni.1984 at gmail.com wrote:
> Hi,
>
> I am using the following command to load a package in Mathematica:
> << Statistics'NormalDistribution'
>
> but it gives the following error:
> Get::noopen:Cannot open Statistics. More
>
> Can someone tell me what is the problem? Do I have to download this
> package from somewhere or is it inbuilt in Mathematica?
>
> Thanks
> Amit